What is another word for lunar caustic?
Pronunciation: [lˈuːnə kˈɔːstɪk] (IPA) 
Lunar caustic is an old term for silver nitrate, an inorganic compound used in medical and photographic industries. This compound has several synonyms including silver nitrate sticks, argenti nitras, and caustic pencil. Some other medical synonyms include lapis infernalis and nitrate of silver. In the photography industry, silver nitrate is commonly referred to as emulsion or sensitizer. The term lunar caustic was coined in ancient times when the compound was believed to be derived from the moon. Though the term is still in use, it is more common to refer to this compound as silver nitrate in modern times.
